Problem: World energy supplies are often measured in the unit of quadrillion British thermal units (1012 Btu), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 × 1017 kJ.Current annual energy consumption in the United States is 99.4 quads. Assume that all this energy is to be generated by burning CH4(g) in the form of natural gas. If the combustion of the CH4(g) were complete and 100% efficient, how many kilograms of CO2(g) would be generated in the combustion?

FREE Expert Solution

1 Btu = 1054 J

1 quad = 1012 Btu


Combustion of methane:    CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(l)          ΔH = -890 kJ

molar mass CO2 = 44.01 g/mol

View Complete Written Solution
Problem Details

World energy supplies are often measured in the unit of quadrillion British thermal units (1012 Btu), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 × 1017 kJ.


Current annual energy consumption in the United States is 99.4 quads. Assume that all this energy is to be generated by burning CH4(g) in the form of natural gas. If the combustion of the CH4(g) were complete and 100% efficient, how many kilograms of CO2(g) would be generated in the combustion?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Thermochemical Equation concept. You can view video lessons to learn Thermochemical Equation. Or if you need more Thermochemical Equation practice, you can also practice Thermochemical Equation practice problems.